43083-10-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 43083-10-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,3,0,8 and 3 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 43083-10:
(7*4)+(6*3)+(5*0)+(4*8)+(3*3)+(2*1)+(1*0)=89
89 % 10 = 9
So 43083-10-9 is a valid CAS Registry Number.
43083-10-9Relevant articles and documents
Concise Total Syntheses of dl-Camptothecin and Related Anticancer Drugs
Shen, Wang,Coburn, Craig A.,Bornmann, William G.,Danishefsky, Samuel J.
, p. 611 - 617 (2007/10/02)
The readily available tricyclic ester 10 has been converted to dl-camptothecin (1) in 39percent yield.It was discovered that, with the C5 carbomethoxy group in place, the C6 benzylic position of 10 (pyridone numbering) is selectively
